Western Power Products Inc.

EPA Interim Tier 4 emissions regulations take effect January 1, 2011 for diesel engines 175 hp and above.

• iT4 regulations for engines between 50 hp and 174 hp take effect January 1, 2012.

• Original equipment manufacturers (OEMs) are required to ship iT4 engines starting January 1, 2011.  Some OEMs have chosen to participate in the EPA's iT4 Flex program which allows them to continue to use Tier 3 engines under certain circumstances for several more years.  Contact your OEM for more information.

• CARB regulations give dealers of equipment falling under the stationary Airborne Toxic Control Measure until June 30, 2011 to sell Tier 3 inventory remaining at the end of 2010.  This includes irrigation power units and emergency gen sets among others.  The stationary ATCM applies to engines 50 HP & above and is defined as any non-self-propelled engine that remains at one location for twelve months or longer or is stored during the off-season and returns to same location next season.  A location can be anywhere on the same farm or contiguous properties.

Different rules and dates apply to In-Use equipment than for New equipment. Self-propelled or mobile ag equipment (i.e. tractors, combines) is currently not covered by an ATCM.  End-user owned & operated portable pull-behind equipment (sprayers, shredders, hay equipment, irrigation booster pumps and the like) falls under Stationary ATCM regulations, not Portable. However, the same equipment, if rented or leased, falls under Portable ATCM rules as CARB regulations deal with specific application situations, not just an equipment type.

• Users may not use Carl Moyer or other grant funds to purchase these Tier 3 engines in 2011.

• Tier 3 engines may continue to be used for equipment repowers to comply with CARB's in-use off-road rule but not for new applications (with the possible exception of OEM Flex engines mentioned above).